Telescopic-sleeve pump



July 2l 1925.

H. M. GREEN TELESGOPIC SLEEVE PUMP Fild Feb.

,y l INVENTOR: UHU BY* ree,

ATTORNEY Patented duly 2l, 1h25..

HENRY M. GREEN, ELOS MGELES, CLFRNIA.

TELESOPG-E4LlEEVE PUMP.

Application filed February l0, 1925.

T0 all 107mm t may concern.'

Be it` known that I, HENRY M. GREEN,

a citizen of' the United States, and resident of Los Angeles, LosAngeles County, State of California, have invented new and usefulImprovements in Telescopic-Sleeve Pumps, of which the following is aspecification.

This invention relaties to pumps and especially to reciprocatingplungers for deep well pumps.

An object of this invention is to provide a highly efficient, packlessplunger pump. An object is to provide av plunger pump having a series ofclosely, but slidably fitting sleeve members certain of which are fiXedto a standing part and certain to the reciprocating or working plunger.

The invention comprises a pump body having elongated sleeve meansclosely running in and on each other to form a very narrow interstice inwhich a lm of liquid being pumped acts as a barrier to prevent leakagefrom the pump chamber after the liquid has been entrained in the pump.

Further objects and advantages will be made manifest in the followingspecification of an embodiment of the invention shown iny theaccompanying drawing; it being understood that modifications, variationsand adaptations may be resorted to within the spirit of the invention ashere claimed.

Figure 1 is a longitudinal, central section. Figure 2 is a cross sectionabove the standing valve.

The pump shown includes a jacket 2 having a standing valve seat 3sustaining a suction pipe P and an inlet valve 4 closing on seat 3.Spaced inwardly, concentrically from jacket 2 and screwed onto threads 5of the seat 3 is a standing, upwardly extending sleeve 6 of any suitablelength. These parts constitute the standing body of the pump.

The plunger includes a top check valve body 10, with its valve 11,discharging upwardly. The body has exterior threads 12 on which isscrewed a sleeve 13 and' extending in interior telescoping relation tothe standing sleeve 6.

` The body 10also has threads 14 on which is screwed a sleeve 15- spacedinwardly, concentrically of sleeve 13.

The sleeves 13 and 15 have a snug but working fit on sleeve 6, and thesleeve 13 may have a working fit on the jacket 2.

Serial No. 8,235.

lltwill. be seen that the very long lapping fit of the several tubularparts upon each other obviates any requirement of packing material otherthan that consisting of such film of liquid as may lodge' in the verynarrow interstice between the sleeves.

lWhat is claimed is:

1. A deep well pump comprising an elongated, cylindrical, standingjacket having an inlet check valve screwed therein and a sleeve screwedon the valve body and projecting above said valve, a tubular top headcarrying a check valve controlling the passage therethrough, an outersleeve having its upper end fixedly secured on said head to movetherewith and extending in exterior telescoping relation to said firstsleeve, and an inner sleeve operating in interior telescoping relationto the first sleeve, and being rigidly screwed to the said head andwithin and spaced from the outer sleeve each sleeve being of uniformdiameter and working one on the other substantially from end to end.

2. A pump construction comprising a deep well jacket tube having aninlet valve and a standing sleeve projecting above said valve, a plungerdevice comprising a tubular head carrying a check valve controlling thepassage therethrough, said device being provided for discharge abovesaid check valve, a sleeve having its upper end rigidly securedexteriorly of and on said head and extending 'in exterior relation tosaid standing sleeve,

and a third sleeve operating in interior telescoping relation to 'saidstanding sleeve, said head being screwed to the u per end of said thirdsleeve' and suspending the latter within and in spaced relation to saidsecond sleeve; each sleeve being of uniform diameter.

3. A packingless deep well pump comprising a standing. elongated, jacketstructure, and a working plunger, and means including elongated tubeshaving close telescopic fit on each other and being secured torespective plunger and structure. parts., whereby to form small workingjoint interstices in which the liquid pumped will form an effectiveleak-proof seal the jacket and one tube being screwed onto a standingvalve body, and a pair ot' the tubes being screwed onto a head valvevbody to work therewith.

HENRY M Ganan.

